How do people handle Go CGO cross | Dagger | Page 1

proven phoenix Feb 3, 2026, 3:44 AM

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here's how I handle it today:

https://github.com/papercomputeco/tapes/blob/main/.dagger/build.go

TLDR: zig C toolchain for cross compiling Linux and using osxcross for cross compiling darwing C toolchain.

GitHub

tapes/.dagger/build.go at main · papercomputeco/tapes

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I supose this isn't even really a CGO / Go question: most on cross compiling toolchains in containers (which I also realize is an age old buildkit problem as well)

young current Feb 3, 2026, 11:30 PM

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@proven phoenix Hey! I managed to cross compile a simple cgo app that uses mattn/go-sqlite3 by doing CC='zig cc'. Used latest zig 0.16.0, ran the go build on a linux amd64 machine using GOOS=darwin and GOARCH=arm64, and got an as-static-as-possible macos binary that ran fine on my mac.

proven phoenix Feb 3, 2026, 11:35 PM

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👀 maybe I need to use 0.16 of the Zig toolchain. I was having problems with some macos headers not being set properly on 0.15.2

#How do people handle Go CGO cross